A revocable anonymous cross-domain communication scheme for smart grid based on ring signcryption

Smart grid is a typical industrial Internet in which a large number of sensing terminals, such as smart meters, hand-held power detection devices and electric vehicle charging piles, realize the collection and monitoring of power production and operation data. In order to avoid unauthorized individuals from maliciously stealing or even modifying power statistics, researchers have proposed a variety of secure data transmission schemes for smart grid in recent years. However, in most of them, the sender and receiver must share the same system parameters and do not meet known temporary session key security (KTSKS). To address these issues, we provide a revocable anonymous cross-domain communication scheme for smart grid based on ring signcryption (RACRSC), which allows cross-domain communication between terminal nodes in certificateless cryptography (CLC) environment and internet of things (IoT) servers in public key infrastructure (PKI) environment, significantly improving the flexibility of application scenarios. In addition, we have demonstrated the safety of the RACRSC through security reduction. Through efficiency evaluation, our proposed scheme has lower computing cost and communication overhead.